Compact wideband frequency reconfigurable metamaterial antenna design

This paper presents the design of compact wideband frequency reconfigurable metamaterial (MTM) antenna. The design is based on the idea of obtaining single and multi-bands in wideband metamaterial antenna within the range of bandwidth. This is achieved by introducing capacitive slots which neutralize inductive properties and generate left handed capacitive parameter. The three series slots in the patch contribute for bandwidth enhancement while two PIN Diode Switches provide multi-bands operation. Computer Simulation Technology (CST) software is used to determine the operation and effectiveness of the proposed antenna. The approach has several notable merits which include improvement of spectrum utilization, minimize spectrum congestion, interference and provide bands selectivity. From the simulation results, it was found that, bandwidth was improved to 2.8 GHz which is equivalent to 82% fractional bandwidth. Also, it can switch to seven different frequency bands of operation with only two number of switches. The realized peak gain is 2.44 dBi and 3.15 dBi at 2.4 GHz and 5.0 GHz respectively with average efficiency of 95%. The antenna can be utilized for wireless communication and cognitive radio application

Compact patch MIMO antenna with low mutual coupling for WLAN applications

A compact triband microstrip patch MIMO antenna is proposed for WLAN applications. The antenna consists of two patches antenna elements, which are orthogonally placed to each other for high isolation at 2.4, 2.8 and 5.8 GHz frequency bands. On its ground plane, a Complementary Split Ring Resonators (CSRRs) is etched for size reduction and multiband generation. The proposed compact MIMO antenna covers an entire size of 58 x 45 x 1.6 mm3, with the patch size of 13.3 x 17.1 mm2. A 79% size reduction at 2.45 GHz was achieved for miniaturization, with a very low mutual coupling (S21 and S12) of -32 dB at all bands

SPARC 2018 Internationalisation and collaboration : Salford postgraduate annual research conference book of abstracts

Welcome to the Book of Abstracts for the 2018 SPARC conference. This year we not only celebrate the work of our PGRs but also the launch of our Doctoral School, which makes this year’s conference extra special. Once again we have received a tremendous contribution from our postgraduate research community; with over 100 presenters, the conference truly showcases a vibrant PGR community at Salford. These abstracts provide a taster of the research strengths of their works, and provide delegates with a reference point for networking and initiating critical debate. With such wide-ranging topics being showcased, we encourage you to take up this great opportunity to engage with researchers working in different subject areas from your own. To meet global challenges, high impact research inevitably requires interdisciplinary collaboration. This is recognised by all major research funders. Therefore engaging with the work of others and forging collaborations across subject areas is an essential skill for the next generation of researchers

Assessment of the Adoption of Afforestation innovations in Dambatta Local Government Area of Kano State

The studyfocused on the assessment of the adoption of afforestation innovations in Dambatta Local Government Area (LGA) of Kano State. Thirty fanners were randomly selected from each of the three-extension block in the study area making a total of 90 respondents. Data were collected through the use of interview schedule while the information collected was analyzed using descriptive statistics. The result indicated that, the age of thefarmers range from 26 to 85 with a mean of 47 years. They also have afarm size rangingfrom 0.5 to 5ha with a mean of 3.Oha. The distance from their houses to thefarms ranges from 16 to 1 to 3km. A total of nine innovations were pushed to thefarmers and the awareness level varies from 21% to 86% while the trial level ranges from 16% to 77% with respect to the individual innovation. The adoption level ranges from 8% to 66%. Among the major constraints revealed by the study were inadequate afforestation inputs and discontinuity of afforestation project. Based on the findings of this study, it is recommended that farmers should be hacked up with inputs suppl

Assessment of the Adoption of Afforestation innovations in Dambatta Local Government Area of Kano State

The studyfocused on the assessment of the adoption of afforestation innovations in Dambatta Local Government Area (LGA) of Kano State. Thirty fanners were randomly selected from each of the three-extension block in the study area making a total of 90 respondents. Data were collected through the use of interview schedule while the information collected was analyzed using descriptive statistics. The result indicated that, the age of thefarmers range from 26 to 85 with a mean of 47 years. They also have afarm size rangingfrom 0.5 to 5ha with a mean of 3.Oha. The distance from their houses to thefarms ranges from 16 to 1 to 3km. A total of nine innovations were pushed to thefarmers and the awareness level varies from 21% to 86% while the trial level ranges from 16% to 77% with respect to the individual innovation. The adoption level ranges from 8% to 66%. Among the major constraints revealed by the study were inadequate afforestation inputs and discontinuity of afforestation project. Based on the findings of this study, it is recommended that farmers should be hacked up with inputs suppl

A compact triband microstrip antenna utilizing hexagonal CSRR for wireless communication systems

In this paper, a compact triband printed antenna with hexagonal complementary split-ring resonators (CSRRs) for 4G applications is proposed. The proposed multiband antenna is comprised of a rectangular patch antenna on the top plane, while on the ground plane, hexagonal CSRRs are etched for size miniaturization (at the lower bands) and multiband generation. Another effect of the CSRR is the shifting of the initial resonance of the patch antenna from 5.17 GHz to the higher band of 6.18 GHz. The triband of 180 MHz 2.4~2.59, 150 MHz 2.79~2.94 and 420 MHz 6.04~6.46 GHz bands acquired can cover WLAN/Wi-Fi and WiMAX operating bands adequately. This can be achieved by choosing the optimal size and position of the CSRR on the ground plane carefully. The design occupies a total size of 45 x 45 mm2 using the low-cost FR-4 substrate. Good agreements are obtained between the measured results and the simulated, which are discussed and presented